X-ray or gamma ray systems or devices – Specific application – Computerized tomography
Reexamination Certificate
2011-04-12
2011-04-12
Glick, Edward J (Department: 2882)
X-ray or gamma ray systems or devices
Specific application
Computerized tomography
C378S004000, C382S294000
Reexamination Certificate
active
07924972
ABSTRACT:
In the CT imaging of non-homogeneously moving objects such as the heart or the coronary vessel tree, there is a problem that different parts of the objects are at rest at different points in time. Thus, a gated reconstruction with a globally selected time point does not yield a sharp image of such objects. According to the present invention, a motion of the object is estimated, describing the motion of selected regions of these objects. Then, on the basis of the estimated motion, time points are determined, where these areas have minimal motion. Then, an image is reconstructed, wherein the data from which the respective regions are reconstructed, correspond to the respective time points, where the regions have minimal motion. Due to this, an improved image quality may be provided.
REFERENCES:
patent: 5262946 (1993-11-01), Heuscher
patent: 5396418 (1995-03-01), Heuscher
patent: 5485493 (1996-01-01), Heuscher et al.
patent: 5544212 (1996-08-01), Heuscher
patent: 5751782 (1998-05-01), Yoshitome
patent: 6047080 (2000-04-01), Chen et al.
patent: 6154516 (2000-11-01), Heuscher et al.
patent: 6353653 (2002-03-01), Edic
patent: 6381487 (2002-04-01), Flohr et al.
patent: 6385285 (2002-05-01), Vaillant et al.
patent: 6396897 (2002-05-01), Ebrahimifard et al.
patent: 6426990 (2002-07-01), Cesmeli
patent: 6529575 (2003-03-01), Hsieh
patent: 7545903 (2009-06-01), Kohler et al.
patent: 2002/0032376 (2002-03-01), Miyazaki et al.
patent: 2004/0175024 (2004-09-01), Rasche et al.
patent: 1072224 (2001-01-01), None
patent: 02103639 (2002-12-01), None
Chen, S.-Y., et al.; Kinematic and Deformation Analysis of 4-D Coronary Arterial Trees Reconstructed From Cine Angiograms; 2003; IEEE Trans. on Medical Imaging; 22(6)710-721.
Grangeat, P., et al.; Theoretical Framework for a dynamic cone-beam reconstruction algorithm based on a dynamic particle model; 2002; Physics in Medicine and Biology; 47:2611-2625.
Grass, M., et al.; A projection-based method for motion-compensated noise suppression; 1998; Philips J. Res.; 51:283-298.
Kachelriess, M., et al.; ECG-correlated image reconstruction from subsecond multi-slice spiral CT scans of the heart; 2000; Med. Phys.; 27(8)1881-1902.
Kalender, W. A.; Computed Tomography:Fundamentals, System Technology, Image Quality, Applications; 2000; Publics MCD Verlag; pp. 78-81.
Schaeffter, T., et al.; Motion Compensated Projection Reconstruction; 1999; MRM; 41:954-963.
Taguchi, K, et al.; High temporal resolution for multislice helical computed tomography; 2000; Med. Phys.; 27(5) 861-872.
Weruaga, L, et al.; Estimating Volumetric Motion in Human Thorax with Parametric Matching Constraints; 2003; IEEE Trans. on Medical Imaging; 22(6)766-772.
Grass Michael
Koehler Thomas
Kuhn Michael Harald
Proksa Roland
Corbett John M
Glick Edward J
Koninklijke Philips Electronics , N.V.
LandOfFree
Reconstruction of an image of a moving object from... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Reconstruction of an image of a moving object from..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reconstruction of an image of a moving object from... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2728551